<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./vue.js"></script>
</head>

<body>
    <div id="app">
        <mycom :msg="msg" @my-event="xyz"></mycom>
    </div>
    <script>
        var component1 = {
            props: ['msg'],
            data() {
                return {
                    commsg: '组件数据'
                }
            },
            template: `
            <div>
                <p>我是组件</p>
                <span>{{msg}}</sapan>
                <button @click="abc">发送</button>
                
                </div>
            `,
            methods: {
                abc() {
                    this.$emit('my-event', this.commsg)
                }
            }
        }
        var vm = new Vue({
            el: '#app',
            data: {
                msg: '你好子组件'
            },
            methods: {
                xyz(val) {
                    console.log(val)
                }
            },
            components: {
                'mycom': component1
            }
        })
    </script>
</body>

</html>